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  • Drainage Kits
    • Popular Manufacturers
      • TDS
      • NDS
      • POLYCAST®
      • ULMA
      • Zurn
      • All Manufacturers
    • Popular Drainage Systems
      • Dura Slope
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
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      • Pour in Place (Concrete)
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      • All Load Classes
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    • Popular Manufacturers
      • TDS
      • Bronze Age
      • NDS
      • Polycast
      • Polylok
      • ULMA
      • Zurn
      • All Manufacturers
    • Popular Drainage Systems
      • Dura Slope
      • FP1200
      • Mini Channel
      • Polycast 600/700
      • Slim Channel
      • SS600
      • ULMA U100K(X)
      • All Drainage Systems
    • Grate Material
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      • Bronze
      • Ductile/Cast Iron
      • Fiberglass
      • Galvanized Steel
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      • Stainless Steel
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  • ULMA HYDROPLUS Mini with IA-MIN-0520-BF Iron Age Minnione Grate BoOF

    ULMA HYDROPLUS Mini w/ Iron Age Minnione BoOF Cast Iron Grate | Class B

    Sale

    ULMA HYDROPLUS Mini w/ Iron Age Minnione BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS MINI with 438 Grate-Stainless Steel Wedge Wire

    ULMA HYDROPLUS Mini w/ ADA Stainless Steel Reinforced Wedge Wire Grate (438)

    Sale

    ULMA HYDROPLUS Mini w/ ADA Stainless Steel Reinforced Wedge Wire Grate (438)

    Regular price From $517.36 USD
    Regular price $658.32 USD Sale price From $517.36 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with 406 Heelproof Galvanized Mesh Grate load class B

    ULMA HYDROPLUS Mini with Galvanized Mesh Heelproof Grate (406 / GEHX100KCB) Class B

    Sale

    ULMA HYDROPLUS Mini with Galvanized Mesh Heelproof Grate (406 / GEHX100KCB) Class B

    Regular price From $164.11 USD
    Regular price $204.14 USD Sale price From $164.11 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with ULMA 497 ADA Mesh Polypropylene Black Grate Class A

    ULMA HYDROPLUS Mini with 497 / PE100KCBM Mesh Grate Class B

    Sale

    ULMA HYDROPLUS Mini with 497 / PE100KCBM Mesh Grate Class B

    Regular price From $115.14 USD
    Regular price $141.18 USD Sale price From $115.14 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini with IA-CARBO-0520-BF Iron Age Carbochon Grate BoOF

    HYDROPLUS Mini w/ Iron Age 5"x20" Carbochon BoOF Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x20" Carbochon BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • Ulma Hydro Mini Plus 495

    ULMA HYDROPLUS Mini with 495/PNH100KCAM Slotted HP Grate Class A

    Sale

    ULMA HYDROPLUS Mini with 495/PNH100KCAM Slotted HP Grate Class A

    Regular price From $102.95 USD
    Regular price $125.50 USD Sale price From $102.95 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with IA-ARGO-0520-HP-BF Iron Age Argo Heel proof BoOF Grate Class B

    ULMA HYDROPLUS Mini w/ Iron Age IA-ARGO-0520-HP-BF Argo Heel Proof BoOF Cast Iron Grate Class B

    Sale

    ULMA HYDROPLUS Mini w/ Iron Age IA-ARGO-0520-HP-BF Argo Heel Proof BoOF Cast Iron Grate Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • Hydro Mini Plus with 486 Vinylester FRP .9 on center Grate Class B_1 Meter

    ULMA HYDROPLUS Mini with 486 Fiberglass Grate - Load Class B

    Sale

    ULMA HYDROPLUS Mini with 486 Fiberglass Grate - Load Class B

    Regular price From $203.56 USD
    Regular price $254.87 USD Sale price From $203.56 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with ULMA 494 ADA Heel proof Polypropylene Black Grate Class A

    ULMA HYDROPLUS Mini with 494/PNH100KCAM Slotted HP Grate Class A

    Sale

    ULMA HYDROPLUS Mini with 494/PNH100KCAM Slotted HP Grate Class A

    Regular price From $96.81 USD
    Regular price $117.62 USD Sale price From $96.81 USD
    Unit price /  per 
    Sale
  • ULMA HYDROM-INTER-HP HYDROPLUS Mini Interlaken Heelproof - Raw

    HYDROPLUS Mini w/ Iron Age 5"x 20" Heel Proof Interlaken RAW Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x 20" Heel Proof Interlaken RAW Cast Iron Grate | Class B

    Regular price From $402.60 USD
    Regular price $411.08 USD Sale price From $402.60 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C - BoOF

    ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C - BoOF

    Sale

    ULMA HYDROPLUS Mini w/ PEDREDA Ductile Iron Grate Class C - BoOF

    Request quote
    Sale
  • ULMA HYDROPLUS Mini with Interlaken BoOF IA-Inter-0520-BF Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Interlaken BoOF Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x 20" Interlaken BoOF Cast Iron Grate | Class B

    Regular price From $513.81 USD
    Regular price $520.56 USD Sale price From $513.81 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class D - BoOF

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class D - BoOF

    Sale

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class D - BoOF

    Request quote
    Sale
  • ULMA HYDROM-INTER-HP-BF HYDROPLUS Mini Interlaken Heelproof - BoOF

    HYDROPLUS Mini w/ Iron Age 5"x 20" Heel Proof Interlaken BoOF Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x 20" Heel Proof Interlaken BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini Channel

    ULMA HYDROPLUS Mini Shallow Channel 1M Section

    Sale

    ULMA HYDROPLUS Mini Shallow Channel 1M Section

    Regular price $16.00 USD
    Regular price $16.00 USD Sale price $16.00 USD
    Unit price /  per 
    Sale
  • Hydro Mini Plus with 488 Vinylester FRP .6 on center Grate Class C_1 Meter

    ULMA HYDROPLUS Mini with 488 Fiberglass bar grate - Load Class C

    Sale

    ULMA HYDROPLUS Mini with 488 Fiberglass bar grate - Load Class C

    Regular price From $307.15 USD
    Regular price $388.05 USD Sale price From $307.15 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with IA-GRK-0520-Iron Age Greek Key Grate Class B

    HYDROPLUS Mini w/ Iron Age 5"x20" Greek Key Raw Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x20" Greek Key Raw Cast Iron Grate | Class B

    Regular price From $402.60 USD
    Regular price $411.08 USD Sale price From $402.60 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with IA-GRK-0520-BF Iron Age Greek Key BoOF Grate Class B

    HYDROPLUS Mini w/ Iron Age 5"x 20" Greek Key BoOF Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x 20" Greek Key BoOF Cast Iron Grate | Class B

    Regular price From $519.86 USD
    Regular price $528.34 USD Sale price From $519.86 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini with IA-CARBO-0520 Iron Age Carbochon Grate Raw

    HYDROPLUS Mini w/ Iron Age 5"x20" Carbochon Raw Cast Iron Grate | Class B

    Sale

    HYDROPLUS Mini w/ Iron Age 5"x20" Carbochon Raw Cast Iron Grate | Class B

    Regular price From $402.60 USD
    Regular price $411.08 USD Sale price From $402.60 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ 465 Ductile Iron Grate Class B

    ULMA HYDROPLUS Mini w/ 465 Ductile Iron Grate Class B

    Sale

    ULMA HYDROPLUS Mini w/ 465 Ductile Iron Grate Class B

    Regular price From $102.68 USD
    Regular price $125.16 USD Sale price From $102.68 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus with 462G Gatic Grate Class D

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (462G)

    Sale

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (462G)

    Regular price From $119.94 USD
    Regular price $147.35 USD Sale price From $119.94 USD
    Unit price /  per 
    Sale
  • ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class C

    Sale

    ULMA HYDROPLUS Mini w/ WAVE Ductile Iron Grate Class C

    Regular price From $228.68 USD
    Regular price $237.16 USD Sale price From $228.68 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus H80 with ULMA 420 Galvanized Steel Slotted Grate Class A

    ULMA HYDROPLUS Mini with Galvanized Slotted Grate (420 / GN100KCA) Class A

    Sale

    ULMA HYDROPLUS Mini with Galvanized Slotted Grate (420 / GN100KCA) Class A

    Regular price From $73.18 USD
    Regular price $90.97 USD Sale price From $73.18 USD
    Unit price /  per 
    Sale
  • ULMA Hydro Mini Plus H80 with ULMA 460 Ductile Iron Grate Class C

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (460) Class C

    Sale

    ULMA HYDROPLUS Mini with Ductile Iron Slotted Grate (460) Class C

    Regular price From $111.07 USD
    Regular price $135.94 USD Sale price From $111.07 USD
    Unit price /  per 
    Sale
  • Drainage For Driveways

    Drainage For Driveways

    December 23, 2021
    Blog

    Drainage For Driveways

    December 23, 2021
    Blog
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Resources

Shipping / Returns

Determining Your Grate Size

Load Class Chart

Installer Map

Drainage News

  • How Do You Clean Out a Trench Drain Without Damaging It?

    May 27, 2026
  • What is Load Class and Why Is It Important?

    Feb 23, 2024
  • Keeping Livestock Safe – Grate Ideas

    Feb 02, 2024
  • TDS Bronze Age™ Collection

    Oct 31, 2023

On Sale

  • ULMA 420 / GN100KCA, Class A, Slotted Galvanized Steel 122mm x 1M Grate

    ULMA 420 / GN100KCA, Class A, Slotted Galvanized Steel 122mm x 1M Grate

    $37.45
  • ULMA 424 / GN100KCC, Class C, Slotted Reinforced Galvanized Steel 124mm x 1M Grate

    ULMA 424 / GN100KCC, Class C, Slotted Reinforced Galvanized Steel 124mm x 1M Grate

    $89.29
  • LD100X-2 Locking Device for ULMA Grates

    LD100X-2 Locking Device for ULMA Grates

    $14.40
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